PCM5121: PCM5121 has no output after selecting Fixed process flow with configurable parameters.

Xp Zheng

Part Number: PCM5121
Other Parts Discussed in Thread: PCM5122EVM-U, PCM5142EVM-U

I am developing a project with PCM5121, and I want to use Audio Processing Fixed Audio Processing Flow (Program 5), and the MCU programming logic is as follows:
1. Enter Stand-by mode(RQST=1)
2. adaptive mode (AMDC=1)
3. process flow setting (PSEL[4:0]=5)
4. normal mode (RQST=0)

In fact, I re-filled the coefficient parameter before step 2, but in fact, no matter whether I filled in the coefficient parameter or not, as long as the third step is executed, the DAC will not output. May I ask what causes this?

over 3 years ago

0 Arash Loloee over 3 years ago

TI__Mastermind 23960 points

Hello Xp, I need to check with a colleague and will get back with you later.

Regards,

Arash

0 Xp Zheng over 3 years ago in reply to Arash Loloee

Prodigy 10 points

Hi Arash,

Thank you very much, the EVM board I purchased has not arrived yet, maybe the reason can be found through the EVM board. But I am in China and it is estimated that it will take half a month to receive the board, so I asked you questions here.

Regards,

0 Xp Zheng over 3 years ago in reply to Arash Loloee

Prodigy 10 points

Hi Arash,

Are there any results about my question?

0 Arash Loloee over 3 years ago in reply to Xp Zheng

TI__Mastermind 23960 points

Hi Xp, Sorry, I have asked my colleague to provide your the answer as i am not familiar with this flow. as soon as I hear from him I will let you know.

Regards,

Arash

0 Arash Loloee over 3 years ago in reply to Arash Loloee

TI__Mastermind 23960 points

Hello XP, have you got your evm yet? I was wondering if you fixed the issue using the EVM. If not can you send me the actual script that you are using so i can take a look at it. thanks.

Arash

0 Xp Zheng over 3 years ago in reply to Arash Loloee

Prodigy 10 points

The logistics shows that the EVM is still in the United States, I am not sure when I will get it.BuildTempFolder.rar

0 Arash Loloee over 3 years ago in reply to Xp Zheng

TI__Mastermind 23960 points

Hi Xp, That seems too long to get your EVM. meanwhile I looked at the script you sent, it is a very large file and it is very possible to have an error in it and hard to catch any issue. I am afraid I can not offer much help on this front.

0 Xp Zheng over 3 years ago in reply to Arash Loloee

Prodigy 10 points

Hi Arash

I know. Will it be like this: Does PCM5121 itself need to burn a specific firmware to effectively execute the third step in the question (process flow setting (PSEL[4:0]=5))? Because once my software executes this step, there will be no sound.

0 Arash Loloee over 3 years ago in reply to Xp Zheng

TI__Mastermind 23960 points

I don't think it needs any specific firmware , I know if you use the EVM, then you need to download the latest TAS1020 USB firmware from the PCM5122EVM-U or PCM5142EVM-U product pages.

0 Xp Zheng over 3 years ago in reply to Arash Loloee

Prodigy 10 points

Hi Arash, Yesterday I received the EVM board, and through PurePath Studio I know how to write the sound effect parameters correctly. thanks for your help.
I have another question. We have done Bass/Treble adjustment on the product, but writing the sound effect parameters needs to make the 5121 enter the standby mode, which will cause the music to be interrupted. Is this unavoidable?

+1 Arash Loloee over 3 years ago in reply to Xp Zheng

TI__Mastermind 23960 points

Hi XP,

it can be avoided by using the “Adaptive Mode”. Check out pg 104 on the datasheet. Basically, you put the device into adaptive mode, then write to the coefficient memory. Those changes are loaded by setting the ACSW bit in the page 44, register 1.

Regards,

Arash

0 Xp Zheng over 3 years ago in reply to Arash Loloee

Prodigy 10 points

Hi Arash,

This is very effective, the problem has been solved, thank you for your help over the past month.

XP Zheng

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PCM5121: PCM5121 has no output after selecting Fixed process flow with configurable parameters.